API is not returning PRO users

I was using API to get users, at DOCS tell that we can identify who is PRO Or not, but im search people who are PRO e that field  plan  is not come

I’m afraid you may have misread the documentation. The documentation for the /users endpoint does not mention plans at all, and the documention for /user/:username states that only the authenticated user or an app with the plan permission can see it.